Textile spool



R /ATwoon Oct, 3, 1944.

TEXTILE sPooL INVENTOR inf/aaa Afro/MEV f., Mw. 9 i f, 9 f I .7T

mim f A MH Patented Oct. 3, 1944 TEXTILE SPOOL Rawson Atwood, New York,N. Y., assignor to Decorated Metal Manufacturing Company, Inc.,Brooklyn, N. Y., a corporation of New York Application August 1, 1942,Serial No. 453,249

7 Claims.

This invention relatesk to improvements in textile spools.

It is an object of the invention to provide an improved end assemblystructure for spools.

It is a further object of the invention to provide such improved endassembly in conjunction with hollow barreled spools of pasteboard andsheet metal construction.

With these and other objects which will appear in the following fulldescription in mind, the invention consists in the combinations andarrangements of parts and details of construction which-will now firstbe fully described in connection with the accompanying drawing, and thenpointed out more particularly in the appended claims.

In the drawing:

Figure 1 is a view showing the parts of a spool Y embodying theinvention in a preferred form, in central longitudinal section, and atan intermediate stage of assembly; A

Figure 2 is a View similar to Figure l but showing the parts completelyassembled and on a Somewhat enlarged scale;

Figure 3 is a cross section taken on the line 3 3 of Figure 2;

Figure 4 is a cross section taken on the 4 4 of Figure 2;

Figure 5 is a plan View of an end flange member prior to assembly;

Figure 6 is an enlarged, fragmentary detail view in central longitudinalsection and is taken on the line 6 6 of Figure 4; and

Figure 7 is a side elevation of an end plug showing grooves formedtherein in assembly.

Referring now to Figure 1, the spool of the invention may co prise abarrel structure like that of my previous Patentv No. 2,250,564, grantedJuly 29, 1941, including an outer barrel I, which is a section ofcylindrical'pasteboard tubing, an inner steel reinforcing tube 2, shownas a split or open-seam tube, and cup shaped braces 3 which are driveninto tube 2 so as to force the same outwardly against the pasteboardouter barrel I. The metal tube 2 is provided with tabs 4 for` attachmentto the spool ends.

Each spool end includes, as shown, a body member 5, ananti-thread-trapping liner 6 therefor and a wooden plug member, 'I or 8,at the drive end and at the opposite end, respectively. Theanti-thread-trapping liner and its method of application are fullydescribed both in my patent above referred to and in my Patent No.2,250,563, granted Julyl 29, 1941. The

line

end 'construction including the liner is shown merely by way ofcompleteness of illustration, such liner forming no part of the presentinvention. The body of each end member 5 `is formed with apertures 9adapted to receive the fastening tabs 4 and includes a cylindricalportion IE! adjacent the apertures 9 and which is adapted to t into themetal tube 2, to which the end ange structure is fastened by turningover the tabs 4 into the position shown in Figure 2. The cylindricalportion III is further formed with an inwardly turned or contractedserrated edge II comprising inwardly extending teeth I2 which areseparated by recesses I3. In the construction shown, the edge EI isformed by forcing inwardly the edge of cylindrical wall I0 and cuttingout the recesses I3 to form the teeth E2. While this construction ispreferable in use, a slightly less expensive method of formation of theserrated edge Il may be employed, consisting in merely stamping ordrawing the cylindrical portion I0, without cutting the edge into theform shown, and utilizing the random breaks produced in the metal andthe unbroken metal between the same as a serrated edge.

At each end of the spool is provided a wooden plug, 'I or 8, having acentral bore I4 which may be utilized as a spindle bearing and the innerend or which is preferably flared as indicated at i5 so as to assist inguiding a spindle into the same. In the case of a drive end member meanssuch as the transverse slot It may be v provided. to engage the lugs ofthe driving member. As will be understood, the slot or other means forengaging a driving member may take such form as is desired, so as toconform to a given type of drive member, the particular constructionshown being adapted to use with a drive member having two lugs on theopposite sides of a spindle base. In any case the spindle bores arepreferably made smaller than the openings in braces 3, so that a spindlewill not be in contact with the braces.

The wooden plugs l and 8 are formed so as to have a driving fit in thecylindrical portions In of the end flanges with the result that, whenthey are driven in during assembly, the teeth I2 cut and press into thewood, forming grooves as shown in Figure 7 so that the end plug issplined to the end flange. The plug bodies will, of course, also becompressed slightly by the turned over ends of the tabs 4. This,however, will not interfere with the proper grooving of the plug and itsproper relationship to the other parts to any noticeable extent andresults in the wooden plugs holding the tab ends firmly against theinner surface of the wall I0, increasing the security Y of the tabfastening.

While not necessary in the practice of the present invention accordingto its broader aspect, the tabs 4 will preferably be relatively wide,and

will be turned over so that while they are con-` ber 16, 1941, resultsin a maximum security of Y fastening, due to deformation of the metalwhich prevents opening the tabs by a mere bending 'action This tabconstruction, while claimed per se in my application just referred to,is es- `pecially advantageous in conjunction with the plug constructionof the present invention, the plugs 1 and 8 serving further to hold-thetabs 4 against separation, and the deformation of the Y tabs into theform described permitting the use of the Vplugs 1 and 8 with a driving twithout the danger of breaking which may sometimes occur with a tabwhich has not been properly performed before driving the plug.

The various parts described, apart from the plugs 1 and 8, areconveniently formed by stamp- Ving and drawing operations, so as toproduce a The conlight weight and inexpensive spool. struction whileshown as applied to a bobbin having a drive end, may also be applied toa spool having no drive end in which case the lower end plug 1 mayassume the same form as the upper end plug 8. 'I'he construction is alsoapplicable to single anged or ilangeless pirns, suchV applicationinvolving merely suitable modification or reduction ofy the end Vflangemembers 5 6 into the desired form.

The end construction described has numerous advantages over thosepreviously employed. The use of a large number of teeth I2 permits ofusing teeth which press into the wood only to a shallow depth so that itis practical to use an ungrooved cylindrical plug and to groove the sameduring assembly without producing, on the one hand, a construction inwhich the plug is not adequately held due to the use of only a fewkeying members or, on the other handrisking splitting of the Wood orinaccurate centering of the spindle bearing where relatively deepgrooves are cut during assembly. The construction shown is alsoadvantageous Vby comparison with arrangements in which a plug member ispre-formed with a keyway or keyways adapted to register with keyin-gmembers Withinabarrel, as such constructions require working to undulyfine tolerances or will result in a construction without the propertightness. The plug and grooving arrangement of the invention, however,has been found to cause no difficulty even when expansion or contractionof the wood due to humidity conditions occurs.

these projections is not critical and that theyV may be reduced innumber Where this is found desirable for manufacturing or other reasons.A suiiicient number of projections distributed around the inside of abarrel should however be provided so as to avoid risk of the plug beingforced off-center during driving and to furnish the required holdingstrength for the particular class of service for which the spool isintended.

What is claimed is: 1. In a spool, and in combination, a tubular barrelcomprising an outer pasteboard tube and an inner split-seam metalreinforcing tube, an end member comprising a cylindrical portion iittingwithin the ,said barrel and having an inwardly turned serrated edge,yand a wooden end plug having a driven fit Within said cylindricalportion and grooved by said serrated'edge during driving into saidcylindrical portion.

2. In a spool and in combination, a tubular barrel body, end tabs onsaid barrel body, a spool end having apertures in registry with the saidtabs, the said tabs being turned over so as to extend into the saidbarrel, and an end plug iittingV into said barrel and in drivenengagement with the said tabs,

3. A spool according to claim 2, in which the said spool end comprises atubular Yportion exf rated edge and having apertures in registry with.,

said tabs, the said tabs being turned over so as to extend into the saidcylindrical portion, and a wooden end plug having a driven fit Withinsaid cylindrica1 portion and grooved by said serrated edge duringdriving into said cylindrical portion.

6. In a spool, and in combination, a tub-ular barrel of substantiallyuniform inside diameter adjacent an end, an end member comprising asheet metal cylindrical portion fitting Within the said barrel andhaving a plurality of inwardly projecting teeth spaced from said barrelend, and Y a Wooden end plug having a driven t within said cylindricalportion and groovedlby said teeth during driving into said cylindricalportion, the said plug extending into the said barrel beyond the saidcylindrical portion and being of substantially uniform diameterthroughout its length within said barrel.

'1. A spool according to claim 6, in which the said plug is formed witha central bore for a spindle bearing. z RAWsoN ATWooDj CERTIFICAEIE oFCORRECTION. Patent No. 2,559,605 october 5, 19ML.

RAWSON ATWO OD It is hereby certified' that error appears n the printedspecification of the above numbered patent requiring correction asfollows: Page 2, first column,v line 1, for the word "performed" readpre`ormed; and that the seid Letters Patent should beraad with thiscorrection therenfthat the same may conform to,y the record 'j of thecase in the Patent Office.

signed ma sealed this 28th 'day of November, A. D. 19th.

Leslie Frazer (Seal) .Actng Commissioner of Patents.

